Question

Check whether the following statements are true/ false.

a) The value of gravitational constant ‘G’ is 9.8 SI unit.

b) Weight is a vector quantity.

c) Weight of a body at the center of the earth will be zero​

Answer 1

Answer:

I don't know this answer I'm also confusted

Answer 2

Answer:

false

true

true

Explanation:

1. At the center of the earth the value of g is zero. The value is 9.8m/s² on the surface of the Earth. The SI unit is m/s².
2. we can define weight as a force with direction towards the centre of the planet. weight has both the magnitude and direction. Hence, weight is a vector quantity. ... Hence, weight has both the magnitude and direction.
3. The weight of a body placed at the centre of the earth is zero. This is because the mass at the exact centre of the earth is zero. Gravitational force exists only if there is mass in the object.